Spring-motor.



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APPLICATION FILED JUNE 29, 1901.

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m m d I JK' WITNESSES:

ATTORNEY ma Nnms persas cg wow-uwe., wAsHwswN n C,

`NITET) STATES PATENT FFICE;

CHARLES HERBERT HOYT, OF NEW YORK, N. Y.

SPRING-MOTOR.

SPECIFICATION forming part of lLetters Patent N o. 724,009, dated March31, 1903. l Application filed June 29,1901. Serial No. 66.504. (Nomodel.)

To all whom, it may con/cern.-

Be it known that LCHARLES HERBERT Hov'r, a citizen of the United States,residing in the borough of Manhattan, in the city and State of New York,have invented a certain new and useful Improvement in Spring-Motors, ofwhich the following is a specification.

My improvement is more especially applicable to that class of fans whichserve by means of a screw actuated by a springwound up at intervals andemployed to maintain a gentle current of air in the required generaldirection for a long period by the unwinding of the spring actingthrough multiplying clock mechanism. I will describe it-as thus applied.`I have devised a specially useful mode of combining severalseparately-supported sleeves each in its own independent bearings andcarrying springs, one on each sleeve, adapted to be brought into actionsingly or two or more at once at will, as will be set forth fully below,and pointed out in the claims.

The entire machine may be instantly applied in a variety of positionsfor domestic, office, and general personal use. It is eminently adaptedfor use in sickness in warm weather.

The following is a description of what IV consider the best means ofcarrying out the invention. I Y Y The accompanying drawingsform a partof this specification.l

Figure l is a rear elevation, partlyin vertical section; 'and Fig. 2 isa side elevation, partly in vertical section.

Similar characters of reference indicate corresponding parts in bothfigures wherel they appear. Y

A is an upright rod of ironor steel, having a horizontal arm Ascrew-threaded, as shown. The rod is received and held adjustably in astand,t(not shown,) which latter may be in all respects like thecorresponding parts-of stands for'supporting sheets of music 'for bands.

Ais a jam-nut applied on the screw-threads. B is the casing of mymachine, provided with base-pieces B, by whichit may rest on a tablewhen the stand is not being utilized, and also with an intermediatebase-bar B2,

formed with a way B3 of dovetail cross-section,

adapted to receive a separately-formed screw- "i l threaded socket M,which has a corresponding dovetail recess and is tapped to engage withthe aforesaid screw-threaded arm A.

This socket is capable of being easily attached a and detached bysliding end wise onthe dovetail Ways B3.. The socket can be applied onthe screw-threaded arm by revolving it, and when the screw-threads arethus Well engaged it is strongly attached tothe casing B by` y tightly,after which the socket and casing to-V gether may be set so as topresent the casing B upright or inclined at any desired angle, and byturning thevjam-nut A2 to induce pressure against the socket-piece themachine is firmly held at the required angle. This permits it to sendthe gentle currentof air either level or inclined downward or upwardupon a table or sick-bed.

I employ an upright shaft G with bevel-gear at each end through which tocommunicate motion from bevel-gear H in clock mechanism H in the casingB to a small bevel gearwheel D3 on the shaft D of a screw-fan. Theseries of springs for impelling the multiplying or clock mechanism H andthe several separately-supported sleeves, one for each spring, and theprovisions for using the several sleeves in winding the springs anddisconnecting when not required constitu te the main subject of theinvention.

I make the mechanism run a long time by means of several springs, eachattached to a metallic sleeve, each of which, with a spring attached,carries a large. wheel and is adjusted on the main shaft l to run freelythereon. A ratchet-wheel 2, one for each sleeve, is firmly keyedorotherwise fixed tothe shaft 1 and engaged with a pawl 3, attached to theadjacent sleeve 4, and a separate frictionbrake 5, working on thesufficiently large friction-Wheel constituting a part of each sleeve,withholds the power of each spring at will. When any spring 7 is thusconditioned, the shaft l turns without its aid. On releasing any brake 5the dynamic power of the corresponding spring 7 is at once communicatedthrough the pawl 3 and ratchet 2, and thus to the main shaft l, andcontributes its This Way is formed IOO force to turn the shaft and drivethe clock mechanism II. By this combination thus arranged each springexerts its power inde pendently, yet is applied and taken off at will.The power of two or more or of all can be applied at the same time toimpel the main shaft by simply taking off two or more brakes 5 at once.The several springs 7 are inde pendently wound by releasing each brakeand turning it by means of worm-gears, one worm 8 connected at will witheach wheel 4. Each worm may be held in gear or dropped out of gear, soas to be idle, by turning a piece 9. The projecting end of eachwormshaft S is squared and receives in its turn a proper winding-key,which may be a crank. (See Fig. l.) Such is easily transferred from oneworm-shaft to another, as required in winding operations. The partitionsBS serve as independent bearings for the several sleeves 4, whichgreatly relieve the constantlyrunning shaft l from the lateral pressurein different directions, to which it would be otherwise subjected.

I attach importance to the brake as means for holding the severalsprings out of use for the reason, among others, that they can beapplied at any time. Itis often desirable to vary the forceof theblowing or other work, and my brakes allow an additional spring to beapplied or when several are working to have one or more arrested andallow the remainder to continue with little trouble and without stoppingthe machine. The brakes also allow the force to be varied by gentlechanges.

Modifications may be made by any good mechanic wit-hout departing fromthe principle or sacrificing the advantages of the invention. The widthand the angularity of the position of the several screw-blades R S T maybe varied with the effect, among others, to retard or accelerate theuncoiling of the several springs. I have shown an eiicient Wlndi'ngkeyW,adapted to be operated by one hand applied on the squared end of aworin-shaft 8 for Winding up one spring. All these parts can be varied.I have in my experiments used multiplying gear analogous to clockmechanism mounted in a stoutly-braced metal framing,r in the casing B. Ihave used springs 7, each corresponding t0 a clock-spring, but largerthan those used in ordinary clocks.

Instead of the worms 8 for eecting the winding of the several springsthat operation may be effected by spur-gear in the obvious manner.

I claim as my inventionl. A motor comprising a series of springssupported continuously and fairly in fixed bearings,a brake BS for eachspring for liberating and arresting at will, and a pawl for holding eachspring idle when desired, anda pawl for connecting each spring to themain shaft as required, combined and arranged forjoint operationsubstantially as herein specified.

2. A motor composed of a series of springs mounted on separate sleevescapable of turning separately and supported independently in fixedbearings, means for holding each spring idle when desired, and a pawlfor connecting each spring to the main shaft as required, and windingmeans S, one for each sleeve, and the movable pieces 9 for throwing thewinding means into and out of engagement at will, all combined andarranged for joint operation substantially as herein speciiied.

In testimony that I claim the invention above set forth I affix mysignature in presence of two witnesses.

CHARLES HERBERT I-IOYT.

Tituessesz J. B. CLAUTICE, M. F. BoYLE.

